Infants of Mexican immigrants. Health status of an emerging population.

Previous studies suggest that infants of Mexican immigrants have favorable birth outcomes despite their high socioeconomic risks. These favorable outcomes have been associated with a protective sociocultural orientation among immigrants. A sample of 708 infants of Mexican origin was assessed to determine whether such health advantages at birth are sustained at 8 to 16 months of age, or alternatively, whether their health deteriorates because of adverse socioeconomic conditions. A a cross-sectional survey was conducted in San Diego County to determine whether the child was healthy or ill (the latter indicating a history of serious infectious disease) and the factors associated with this outcome. Among infants born without serious medical problems, 74% remained healthy. For 26% of the infants, their health status was eroded by social conditions. Factors associated with illness were large households, barriers to care, and maternal characteristics including smoking, pregnancy complications, and employment. Women born in Mexico who were newcomers to the United States and spoke Spanish exclusively were more likely than non-newcomers to have ill children. In this population, one fourth of Latino infants of immigrants were at high risk for serious infectious disease despite using preventive care.